US3724557A - Apparatus adapted to be coupled to a traction vehicle serving for the maintenance or construction of water-bound roads - Google Patents

Apparatus adapted to be coupled to a traction vehicle serving for the maintenance or construction of water-bound roads Download PDF

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Publication number
US3724557A
US3724557A US00054967A US3724557DA US3724557A US 3724557 A US3724557 A US 3724557A US 00054967 A US00054967 A US 00054967A US 3724557D A US3724557D A US 3724557DA US 3724557 A US3724557 A US 3724557A
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United States
Prior art keywords
main support
undercarriage
levelling
support unit
coupled
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Expired - Lifetime
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US00054967A
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English (en)
Inventor
M Boschung
H Gisler
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Marcel Boschung AG
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Marcel Boschung AG
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7604—Combinations of scraper blades with soil loosening tools working independently of scraper blades
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7663—Graders with the scraper blade mounted under a frame supported by wheels, or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/961—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements with several digging elements or tools mounted on one machine

Definitions

  • This equipment also incorporates a pavement July 22, 1969 Switzerland ..t ..1 1189/69 breaker beam and a levelling plate, both of which are pivotably coupled with the main support independently of one another for movement about at least one axis extending transverse to the lengthwise axis of the Clun-A01) apparatus
  • the pavement Fleld Search 417, 735, 780, breaker beam and the levelling plate can each be ar- 172/285 l97, 278 rested independently of one another at a respective v predetermined spacing with respect to the main sup- [56] References Cited port, and further, wherein the rear endof the main UNITED STATES ATENTS support is coupled by means of a guide mechanism with the undercarriage for the purpose of regulating' 3,608,643 2/1971 Flood et al.
  • the present invention relates to a new and improved apparatus which can be coupled to a traction vehicle and serving for the construction or maintenance of water-bound roads, the apparatus being of the type incorporating a main support bearing upon an undercarriage, a pavement breaker beam and a grading or levelling plate, both of which are pivotably coupled with the main support independently of one another about at least one axis extending transverse to the lengthwise axis of the apparatus.
  • Apparatuses are already known to the art for the maintenance or construction of water-bound roads which can be coupled to a traction vehicle or the like and possess a pavement or road breaker beam and/or a grading or levelling plate.
  • the breaker beam orthe levelling plate can be elevationally positioned and, if desired, rocked into the correct location with respect to the lengthwise axis of the apparatus, by utilizing a number of mechanical, hydraulic or pneumatic lifting mechanisms.
  • a platform for an operator who correctly controls the apparatus during operation To this end, it is necessary that the operator actuate a number of levers controlling the individual lifting mechanisms. Yet, particularly in the case of performing maintenance operations upon small roads the utilization of such known apparatuses is much too expensive because of the necessity of providing an operator.
  • Another, more specific object of the present invention relates to an improved apparatus capable of being coupled with a traction vehicle and serving for the maintenance or construction of water-bound roads, which further enables dispensing with the use of an additional operator and provides a rational and economical utilization of the equipment.
  • Still a further significant object of the present invention relates to an improved apparatus for performing, maintenance and construction work at roads or other surfaces which is relatively simple in construction, reasonably economical to manufacture, and requires a minimum of operating personnel .to carry out the requisite work.
  • the inventive apparatus is manifested by the features that the breaker beam and the levelling plate can be arrested independently of one another at a respective predetermined distance with respect to the main support, and wherein mechanism with the undercarriage for the purpose of regulating the height of this end of the equipment above the ground.
  • FIG. 3 is a schematic illustration of a supplementary or auxillary mechanism which can be laterally secured to the breaker beam of the apparatus shown in FIGS. 1 and 2.
  • FIGS. 1 and 2 the exemplary embodiment of road maintenance or construction equipment depicted in FIGS. 1 and 2 will be seen to comprise a main support 1, at the front end of which there is provided a suspension eyelet 2 for coupling the apparatus or equipment to the nonillustrated traction hook or equivalent structure of a traction vehicle.
  • the suspension eyelet 2 is operatively' coupled by an elevation adjustment mechanism 17 with the main supthe rear end of the main support is coupled by a guide port 1 in order to accomodate the height of the suspension eyelet 2 to the height of the traction hook above the ground.
  • the rear end 3 of the main support 1 is downwardly flexed. Now, it will be observed that at the rear face of this bent or flexed end 3 there are secured two bearing flanges 4, between which there is pivotably mounted a first connecting element 5 which can rock about a bolt member 6. The other end of this connecting element 5 is located beneath the center of the undercarriage 7 at the central plane thereof and is pivotably coupled therewith.
  • the undercarriage 7 itself generally essentially emin cross-section, carrrier 8 extending transversely with respect to the lengthwise or longitudinal axis of the apparatus. Furthermore, carrier 8 is equipped at its front face with two pairs of flanges 9 for retaining two further connecting elements 10. The other ends of these connecting elements 10 are" pivotably coupled with the ends of a rod 1 I piercingly extending through the bent or flexed end 3 of the main support 1.
  • the connecting line between the .bolt 6 and the rod l1 as well as the connecting line between the pivot axes about which pivot the connecting elements 5 and 10 with respect to the undercarriage 7, collectively form with these connecting elements 5 and 10, a parallelogram guide arrangement between the main support 1 and the unde'rcarriage 7.
  • a single-acting hydraulic pressure cylinder '12 is pivotably arranged at the rear upper side protion or end of the, main support 1.
  • the piston rod 13 of this pressure cylinder 12 is articulated with the first connecting element 5 so that the angular position thereof can be adjusted with respect to the flexed end 3 of the main support 1.
  • each end of the carrier 8 there is provided a respective axle or shaft 14 for the travelling wheels 15.
  • These shafts 14 together with the travelling wheels 15 are pivotable in a horizontal plane about a respective vertically arranged pin member 16 anchored to the ends of the carrier 8.
  • a double-arm lever 18 is pivotably mounted at the main support 1 directly behind the elevation adjustment mechanism 17. Traction cables 19 and 20 are secured to this lever 18, these traction cables being guided at the rear portion of the apparatus within flexible tubes 21 and 22, respectively, and over the deflecting rollers 23.
  • the ends of these traction cables 19 and 20 are coupled with the single-arm levers 24 and 25, respectively, which, in turn, are rigidly secured to the axles or shafts 14 for rocking or pivoting of the travelling wheels 15.
  • One end of the double-arm lever 18 is destined to be connected with a point or location at the traction vehicle through the agency of a non-illustrated guide,,this location possessing a lateral spacing from the traction hook.
  • Adjustment rail 32 possesses in its lengthwise direction at a uniform spacing from one another appropriate apertures or bores 34 through which there can be extended a bolt member 35, in order to regulate the spacing or distance between the breaker beam 30 and the main support 1.
  • a plurality of breaker or tear-up teeth 36 uniformly spaced from one another, are arranged at the rear face of the breaker beam 30 in suitable cutouts or openings provided thereat.
  • a traction spring 40 is effectively arranged between .the breaker beam 30 and the main support 1, so that the weight of the breaker beam 30 is partially compensated in order to facilitate the adjustment of the spacing between it and the support frame or carrier 1.
  • the apparatus also incorporates a frame 38 having a front narrow side 37 which is mounted between the bearing blocks 28 at the double-arm lever member 18 is disposed perpendicular, to the lengthwise axis of the apparatus and the travelling wheels 15 are situated parallel to such lengthwise axis.
  • the double-arm lever member 18 is rotated in counterclockwise direction by means of the nonillustrated guide for the apparatus depicted in FIG. 2, as such has been indicated in phantom lines.
  • This pivotal movement is transmitted by the traction cables 19 and 20 in the opposite direction to both of the travelling wheels 15, and specifically in such a way that the apparatus trails and follows the traction vehicle approximately along the same tracks.
  • a second respective single-arm lever member 26 which projects rearwardly is secured to the associated shafts or axles 14 of the wheels 15.
  • the respective ends of the two single-arm lever members 26 are coupled with one another via a connection rod 27 or equivalent structure for the purpose of synchronizing the pivotal movements of both travelling wheels 15.
  • the pin members 16, which define the pivot axes about which the wheels 15 are rocked extend practically always vertically above the ground independently of the height of the rear portion of the main support 1, so that guiding of the apparatus is not influenced by the elevational adjustment of the flexed end 3 of the main support 1.
  • Two bearing blocks 28 are welded or otherwise affixed beneath the forward portion of the main carrier 1.
  • a shaft 29 is piercingly extended through appropriate bores provided at the bearing blocks 28, shaft 29 being mounted to be rotatable but not axially displaceable.
  • a surface or pavement breaker beam 30 is pivotably mounted about the axis of the shaft 29 through the agency of two pivot arms 31 rigidly connected with the breaker beam 30 and rigidly connected with the ends of the shaft 29.
  • An adjustment rail 32 which is pivotably the shaft 29 through the agency of connection element 39, so that this frame 38 is pivotable about such shaft 29 and limitedly rotatable about its lengthwise axis.
  • the latter feature can be achieved in that a ball-andsocket joint can be provided at the connection piece 39 and through which extends the shaft 29.
  • Projection 41 has a somewhat inclined rear face at which there is mounted a plate member 42 possessing two pins 43 and 44 projecting therefrom at substantially right angles. These pins 43 and 44 partially extendinto a guide block 45, which in cross section is substantially of U-shaped configuration, and which is secured to the inside region of the flexed end of the main carrier 1. Further, within the guide block 45 there are provided three or more transverse bores 46 for selectively receiving a blocking bolt member 47 or equivalent structure. The lower region of the guide block 45 is closed off by atransversely extending web 48.
  • a grading or levelling plate 49 arranged at the front face of the projection or shoulder 41 is pivotably coupled with this shoulder 41 for movement about an axis disposed perpendicular to its lengthwise axis.
  • This coupling or connection occurs through the agency of two pairs of bearing flanges 50 secured to the shoulder 41, two flaps 51 connected to the grading or levelling plate 49 and two screws 52 which extend through bores in the bearing flanges 50 and the flaps 51.
  • a locking plate 53 possessing the configuration of a sector of a circle is arranged beneath the lower flap member 51 and parallel thereto.
  • Locking plate 53 is equipped with bores 54 arranged concentrically about the pivot axis of the levelling plate 49 and partially enclosed by a bracket 55 secured to the underside of the shoulder 41 so that it is possible to regulate the angle between the lengthwise axis of the apparatus and the levelling plate 49 and to block such in selected position by means of a in'sertable pin 56.
  • a brace or support 58 which, on the one hand, is mounted in a sleeve member 59 secured to the external plate 57 and, on the other hand, is mounted at one pin 60 connected to the upper edge of the levelling plate 49 ensures that the selected angle between the external plate 57 and the levelling plate 59 is maintained, so that the external plate 57 travels approximately parallel to the lengthwise axis of the apparatus.
  • FIG. 3 illustrates an auxillary device which can be connected to one end of the breaker beam 30.
  • This auxillary device serves the purpose of cutting the marginal edges of the roadway. It encompasses a knife or cutter 61 which is maintained in the illustrated inclined position by a retaining bracket 62 connected to the end face of the breaker beam 30. Any suitable expedient, such as for instance a non-illustrated conventional positioning screw can be utilized to arrest this cutter 61 in the desired elevational position. Behind the cutter or knife 61 there is located a plowshare 63 for displacing the cut marginal edges towards the center of the apparatus or towards the outside.
  • Plowshare 63 is rotatably connected with the upper end of the breaker beam 30 through the agency of a handle 64 connected with the plowshare 63 and a substantially V-shaped connection member 65 coupled with projections or upstanding portion 66 provided at the upper end of such breaker beam 30, so that the edge cutting mechanism just described can be moved independently of the breaker beam 30 about its pivot or rotational points provided at the projections 66.
  • an auxillary support or leg brace 67 pivotable about the shaft member 29.
  • the breaker beam 30 is lowered against the force of the traction spring 40, by regulating the position of the adjustable rail 32 until the bolt 35 can be piercingly inserted into the uppermost bore 34.
  • This position which the breaker beam 30 has assumed in relation to the main carrier or support 1 then remains continuously stable during tearing up of the road surface.
  • the arresting or blocking bolt 47 is removed from the guide block 45, so that the levelling plate 49 only bears upon the surface of the road with its own weight and can freely move up and down more or less independently of the position of the main support 1.
  • the grading or levelling plate 49 depending upon its position, distributes the road material loosened by the tear-up teeth 36 or the breaker beam 30, so that preferably a portion of this road material is displaced towards the center of the roadway. If the levelling plate 49 is briefly raised by the torn-up road material, the force with which the tear-up teeth 36 are pressed down is in no way influenced.
  • the levelling plate 49 bearing upon the support surface would get in the way or be disturbing. Yet, by raising the main carrier 1 into its higher position, not only is the breaker beam 30 raised away from the support or road surface, but by virtue of the provision of the transverse extending web 48 at the lower end of the guide block 45 the levelling plate 49 is likewise raised, because the transverse web 48 and the lower pin 44 transmit the upward movement of the main support 1 to the levelling plate 49.
  • the freedom of movement of the levelling plate 49 with respect to the main support 1 is removed by inserting the blocking bolt 47 into the guide block 45, so that the elevational position of the levelling plate 49 is directly dependent upon the height of the main support 1 from the ground.
  • the levelling plate 49 no longer bears by means of its own weight upon the road surface, rather there additionally is exerted the entire weight of the apparatus with the exception of the undercarriage 7 through the agency of this levelling plate 49 upon the road surface.
  • the levelling or grading plate 49 is located closer to the wheels 15 of the apparatus of the invention than the non-illustrated axle of the traction vehicle, any irregularities of the road which may be present are smoothed out extremely well since the wheels 15 roll upon the previously levelled or graded portion of the road and the rear axle of the traction vehicle is located much further forward. Hence, up and down movements of the rear axle of the traction vehicle are only transmitted to a rather slight extent to the levelling or grading plate 49.
  • the above described apparatus for the construction or maintenance of water-bound roads possesses, in relation to the known devices of this type, the advantage that only a single pressure cylinder 12 is required for adjusting the elevational position of the breaker beam 30 or the levelling plate 49. Moreover, by virtue of the provided guidingof the wheels 15 it is no longer necessary for the driver of the traction vehicle to exercise particular care in order that the apparatus, for instance, is guided exactly along the edge of the road. Hence, he can concentrate fully upon steering the vehicle, counting upon the fact that the apparatus will truly follow the tracks thereof. Simple manipulation of the single pressure cylinder 12 can easily be carried out by the driver. Hence, it is possible to dispense with any additional operator for the apparatus and the operation thereof is accordingly rationalized.
  • the levelling or grading plate 49 can be raised so high by means of the blocking bolt 47 that such levelling plate is retained at a spacing above the surface of the road without it contacting the torn up road material.
  • the force acting upon the breaker beam 30 is increased by the amount of the weight of the levelling plate 49.
  • the breaker beam in a manner not shown in the arrangement of FIGS. 1 and 2, it still would be possible for the breaker beam to be constructed to be pivotable about its lengthwise axis in order to adjust the angle of attack of the breaker beam teeth 36 with respect to the surface of the road.
  • the single pressure cylinder which is to be actuated during the tearing up or grading of the surface of the road, which cylinder is coupled via a non-illustrated pressurized conduit with the traction vehicle
  • a threaded spindle arrangement for regulating the height of the rear end 3 of the main carrier or support 1. It is not absolutely necessary that the breaker beam 30 and the levelling plate 49 are arranged to be pivotable about the same pivot axis defined by the shaft 29. Whatis important is that the breaker beam and the levelling plate are pivotably mounted independently of one another with respect to the main support 1.
  • An apparatus capable of being coupled to a traction vehicle and used for the construction or maintenance of water-bound roads or the like, comprising an undercarriage, a main support unit bearing upon said undercarriage, a road surface-breaker beam member and a levelling member, means pivotably connecting both said breaker beam member and said levelling member with said main support unit independently of one another for movement about at least one axis extending transverse with respect to the lengthwise axis of the apparatus, means selectively positioning said breaker-beam member and said levelling member independently from another at a respective predetermined spacing with respect to said main support unit, guide means displaceably connecting the rear end of said main support unit with said undercarriage, means con of the traction vehicle, and wherein said steering means comprises a double-arm lever member mounte at said main support unit and capable of being connected with said traction vehicle, and further incorporates two single arm lever members each coupled with a respective vertically arranged pivot means provided for each travelling wheel member of said undercarriage, a respective end of the double-arm lever member
  • An apparatus capable of being coupled to a traction vehicle and used for the construction or maintenance of water-bound roads or the like, comprising an undercarriage, travelling wheel means provided for said undercarriage, a main support unit bearing upon said undercarriage and its wheel means, a road surfacebreaker beam member and a levelling member, means pivotably connecting both said breaker beam member and said levelling member with said main support unit independently of one another for movement about at least one axis extending transverse with respect to the lengthwise axis of the apparatus, -means selectively positioning said breaker-beam member and said levelling member independently from another at a respective predetermined spacing with respect to said main support unit, and guide means displaceably connecting the rear end of said main support unit with said undercarriage, means connected with said guide means in order to control the height of said rear end of said main support unit above the ground, and wherein said means for positioning said levelling member incorporates a vertically extending guide block deposed at said rear end of said main support unit, pin members provided at the rear face of said

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)
  • Road Paving Machines (AREA)
US00054967A 1969-07-22 1970-07-15 Apparatus adapted to be coupled to a traction vehicle serving for the maintenance or construction of water-bound roads Expired - Lifetime US3724557A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1118969A CH510786A (de) 1969-07-22 1969-07-22 An ein Zugfahrzeug kuppelbares Gerät für den Unterhalt oder Bau von wassergebundenen Strassenkörpern

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US3724557A true US3724557A (en) 1973-04-03

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US00054967A Expired - Lifetime US3724557A (en) 1969-07-22 1970-07-15 Apparatus adapted to be coupled to a traction vehicle serving for the maintenance or construction of water-bound roads

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US (1) US3724557A (de)
CH (1) CH510786A (de)
DE (1) DE2035066C3 (de)
IL (1) IL34906A (de)
YU (1) YU33586B (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889760A (en) * 1973-07-11 1975-06-17 Technion Res & Dev Foundation Combined smoother and roller-packer
US4217962A (en) * 1978-10-05 1980-08-19 Schaefer Michael J Hydraulically operated grade scraper
WO1983000174A1 (en) * 1981-07-13 1983-01-20 Doss, Harry, L. Grading machine
US4418759A (en) * 1981-01-12 1983-12-06 Mork Orlan H Soil leveling apparatus
US4448258A (en) * 1981-01-12 1984-05-15 Mork Orlan H Soil leveling apparatus
US4553608A (en) * 1984-02-16 1985-11-19 Miskin Richard B Scraper with ripper assembly
US4892155A (en) * 1978-12-06 1990-01-09 Wanamaker Richard B Leveling attachment for a skid-steer vehicle
US5024280A (en) * 1981-01-12 1991-06-18 Mork Orlan H Soil leveling apparatus with improved frame and hitch
US8944176B2 (en) 2006-06-01 2015-02-03 Absolute Innovations, Inc. Implement and method for preparing and maintaining dirt arena footing
EP3623532A1 (de) * 2018-09-13 2020-03-18 Progressive IP Limited Bodenbearbeitungsvorrichtung mit bereitstellung von montierten zubehörteilen
US20210310212A1 (en) * 2020-04-06 2021-10-07 Ocfab Ltd. Earth Working Implement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3418975A1 (de) * 1984-05-22 1985-11-28 PÖMA-Maschinenbau Wolfgang Pötzsch, 3341 Groß Denkte Planier- und verdichtungsgeraet

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142985A (en) * 1936-01-18 1939-01-10 Galion Iron Works And Mfg Comp Road working machine
US2497778A (en) * 1944-03-17 1950-02-14 Union Fork & Hoe Co Mechanism for road graders
US2662314A (en) * 1948-06-10 1953-12-15 Deere & Co Land leveler
US3043034A (en) * 1961-05-03 1962-07-10 Kober Karl Leveler
US3151407A (en) * 1962-05-28 1964-10-06 Schmidt Harold Land plane
US3266181A (en) * 1964-06-08 1966-08-16 Olafson Walter Soil levelling and diking machine
US3348323A (en) * 1964-06-17 1967-10-24 George W Purdy Combination land leveler
US3608643A (en) * 1968-02-12 1971-09-28 Universal Graders Ltd Grading machines

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142985A (en) * 1936-01-18 1939-01-10 Galion Iron Works And Mfg Comp Road working machine
US2497778A (en) * 1944-03-17 1950-02-14 Union Fork & Hoe Co Mechanism for road graders
US2662314A (en) * 1948-06-10 1953-12-15 Deere & Co Land leveler
US3043034A (en) * 1961-05-03 1962-07-10 Kober Karl Leveler
US3151407A (en) * 1962-05-28 1964-10-06 Schmidt Harold Land plane
US3266181A (en) * 1964-06-08 1966-08-16 Olafson Walter Soil levelling and diking machine
US3348323A (en) * 1964-06-17 1967-10-24 George W Purdy Combination land leveler
US3608643A (en) * 1968-02-12 1971-09-28 Universal Graders Ltd Grading machines

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889760A (en) * 1973-07-11 1975-06-17 Technion Res & Dev Foundation Combined smoother and roller-packer
US4217962A (en) * 1978-10-05 1980-08-19 Schaefer Michael J Hydraulically operated grade scraper
US4892155A (en) * 1978-12-06 1990-01-09 Wanamaker Richard B Leveling attachment for a skid-steer vehicle
US5024280A (en) * 1981-01-12 1991-06-18 Mork Orlan H Soil leveling apparatus with improved frame and hitch
US4418759A (en) * 1981-01-12 1983-12-06 Mork Orlan H Soil leveling apparatus
US4448258A (en) * 1981-01-12 1984-05-15 Mork Orlan H Soil leveling apparatus
US4924945A (en) * 1981-01-12 1990-05-15 Mork Orlan H Soil leveling apparatus with improved scraper member
US4411323A (en) * 1981-07-13 1983-10-25 Doss Harry L Grading machine
WO1983000174A1 (en) * 1981-07-13 1983-01-20 Doss, Harry, L. Grading machine
US4553608A (en) * 1984-02-16 1985-11-19 Miskin Richard B Scraper with ripper assembly
US8944176B2 (en) 2006-06-01 2015-02-03 Absolute Innovations, Inc. Implement and method for preparing and maintaining dirt arena footing
US9826672B1 (en) 2006-06-01 2017-11-28 Abi Attachments, Inc. Implement and method for preparing and maintaining dirt arena footing
EP3623532A1 (de) * 2018-09-13 2020-03-18 Progressive IP Limited Bodenbearbeitungsvorrichtung mit bereitstellung von montierten zubehörteilen
US20210310212A1 (en) * 2020-04-06 2021-10-07 Ocfab Ltd. Earth Working Implement
US12012717B2 (en) * 2020-04-06 2024-06-18 Ocfab Ltd. Earth working implement

Also Published As

Publication number Publication date
IL34906A (en) 1974-01-14
DE2035066B2 (de) 1974-09-12
CH510786A (de) 1971-07-31
YU186570A (en) 1977-02-28
DE2035066A1 (de) 1971-02-18
DE2035066C3 (de) 1975-04-30
IL34906A0 (en) 1970-09-17
YU33586B (en) 1977-08-31

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